<template>
  <div class="header">
      <!-- 折叠按钮 -->
      <div class="collapse-btn" @click="collapseChage">
          <i v-if="!collapse" class="el-icon-s-fold"></i>
          <i v-else class="el-icon-s-unfold"></i>
      </div>
      <div class="logo">新闻管理</div>
      <div class="header-right">
          <div class="header-user-con">
            <div class="guanli" @click="openLike">
              <p style="font-size:16px">新闻查看</p>
              <img class="dianji" src="./../../assets/image/dianji.png" alt="">
            </div>
              <!-- 全屏显示 -->
              <div class="btn-fullscreen" @click="handleFullScreen">
                  <el-tooltip
                      effect="dark"
                      :content="fullscreen ? `取消全屏` : `全屏`"
                      placement="bottom"
                  >
                      <i class="el-icon-rank"></i>
                  </el-tooltip>
              </div>
              <!-- 消息中心 -->
              <!-- <div class="btn-bell">
                  <el-tooltip
                      effect="dark"
                      :content="message ? `有${message}条未读消息` : `消息中心`"
                      placement="bottom"
                  >
                      <router-link to="/tabs">
                          <i class="el-icon-bell"></i>
                      </router-link>
                  </el-tooltip>
                  <span class="btn-bell-badge" v-if="message"></span>
              </div>-->
              <!-- 用户头像 -->
              <!-- <div class="user-avator">
                  <img src="../../assets/img/img.jpg" />
              </div> -->
              <!-- 用户名下拉菜单 -->
              <!-- <span class="user-name el-dropdown-link">
                  {{ username }}
                  <i class="el-icon-caret-bottom"></i>
              </span>-->
              <!-- <el-dropdown class="user-name" trigger="click" @command="handleCommand">
                  <el-dropdown-menu slot="dropdown">
                      <el-dropdown-item>{{ username }}</el-dropdown-item>
                  </el-dropdown-menu>
              </el-dropdown>-->
          </div>
      </div>
  </div>
</template>
<script>
import bus from '../common/bus';
export default {
  data() {
      return {
          collapse: false,
          fullscreen: false,
          name: 'linxin',
          message: 2
      };
  },
  computed: {
      username() {
          let username = localStorage.getItem('ms_username');
          return username ? username : this.name;
          console.log(username);
      }
  },
  methods: {
    openLike(){
      this.$router.push('/user')
    },
      // 用户名下拉菜单选择事件
      handleCommand(command) {
          if (command == 'loginout') {
              localStorage.removeItem('ms_username');
              this.$router.push('/login');
          }
      },
      // 侧边栏折叠
      collapseChage() {
          this.collapse = !this.collapse;
          bus.$emit('collapse', this.collapse);
      },
      // 全屏事件
      handleFullScreen() {
          let element = document.documentElement;
          if (this.fullscreen) {
              if (document.exitFullscreen) {
                  document.exitFullscreen();
              } else if (document.webkitCancelFullScreen) {
                  document.webkitCancelFullScreen();
              } else if (document.mozCancelFullScreen) {
                  document.mozCancelFullScreen();
              } else if (document.msExitFullscreen) {
                  document.msExitFullscreen();
              }
          } else {
              if (element.requestFullscreen) {
                  element.requestFullscreen();
              } else if (element.webkitRequestFullScreen) {
                  element.webkitRequestFullScreen();
              } else if (element.mozRequestFullScreen) {
                  element.mozRequestFullScreen();
              } else if (element.msRequestFullscreen) {
                  // IE11
                  element.msRequestFullscreen();
              }
          }
          this.fullscreen = !this.fullscreen;
      }
  },
  mounted() {
      if (document.body.clientWidth < 1500) {
          this.collapseChage();
      }
  }
};
</script>
<style scoped>
.guanli{
  /* margin-right:30px; */
  height: 30px;
  line-height: 30px;
  /* margin-top: 10px; */
  padding: 0 30px 0px 15px;
  border: 1px solid #fff;
  border-radius: 5px;
  position: relative;
}
.dianji{
  position: absolute;
  top: 20.4%;
  right: 5.5%;
  width: 20px;
}
.header {
  position: relative;
  box-sizing: border-box;
  width: 100%;
  height: 70px;
  font-size: 22px;
  color: #fff;
}
.collapse-btn {
  float: left;
  padding: 0 21px;
  cursor: pointer;
  line-height: 70px;
}
.header .logo {
  float: left;
  width: 340px;
  line-height: 70px;
}
.header-right {
  float: right;
  padding-right: 50px;
}
.header-user-con {
  display: flex;
  height: 70px;
  align-items: center;
}
.btn-fullscreen {
  transform: rotate(45deg);
  margin-right: 5px;
  font-size: 24px;
}
.btn-bell,
.btn-fullscreen {
  position: relative;
  width: 30px;
  height: 30px;
  text-align: center;
  border-radius: 15px;
  cursor: pointer;
}
.btn-bell-badge {
  position: absolute;
  right: 0;
  top: -2px;
  width: 8px;
  height: 8px;
  border-radius: 4px;
  background: #f56c6c;
  color: #fff;
}
.btn-bell .el-icon-bell {
  color: #fff;
}
.user-name {
  margin-left: 10px;
}
.user-avator {
  margin-left: 20px;
}
.user-avator img {
  display: block;
  width: 40px;
  height: 40px;
  border-radius: 50%;
}
.el-dropdown-link {
  font-size: 14px;
  color: #fff;
  cursor: pointer;
}
.el-dropdown-menu__item {
  text-align: center;
}
</style>
